{"id":"CVE-2026-26104","title":"Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api","summary":"A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption met…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"Red Hat","product":"udisks2","affected":["udisks2 (all versions)","udisks2 (all versions)","udisks","udisks2","udisks2","udisks2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-02-25T20:49:09.190143Z"},"published":"2026-02-25","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:49:14.214Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-26104","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:3476","label":"RHSA-2026:3476"},{"url":"https://access.redhat.com/errata/RHSA-2026:5831","label":"RHSA-2026:5831"},{"url":"https://access.redhat.com/security/cve/CVE-2026-26104"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2433717","label":"RHBZ#2433717"},{"url":"https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw"}],"tags":["cve.org"],"epss":0.00082,"epssPercentile":0.0019,"ingestedAt":"2026-11-05T22:38:31.560Z","slug":"CVE-2026-26104","body":"## Overview\n\nA flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.\n\n## Affected\n\n- `udisks2 (all versions)`\n- `udisks2 (all versions)`\n- `udisks`\n- `udisks2`\n- `udisks2`\n- `udisks2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}